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abe384f68a
Phrases like "returns whether or not the image is opaque" could be describing what the function does (it always returns, regardless of the opacity) or what it returns (a boolean indicating the opacity). Even when the "or not" is missing, the phrasing is bizarre. Go with "reports whether", which is still clunky but at least makes it clear we're talking about the return value. These were edited by hand. A few were cleaned up in other ways. R=golang-dev, dsymonds CC=golang-dev https://golang.org/cl/11699043
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package image
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import (
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"image/color"
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)
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var (
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// Black is an opaque black uniform image.
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Black = NewUniform(color.Black)
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// White is an opaque white uniform image.
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White = NewUniform(color.White)
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// Transparent is a fully transparent uniform image.
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Transparent = NewUniform(color.Transparent)
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// Opaque is a fully opaque uniform image.
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Opaque = NewUniform(color.Opaque)
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)
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// Uniform is an infinite-sized Image of uniform color.
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// It implements the color.Color, color.Model, and Image interfaces.
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type Uniform struct {
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C color.Color
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}
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func (c *Uniform) RGBA() (r, g, b, a uint32) {
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return c.C.RGBA()
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}
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func (c *Uniform) ColorModel() color.Model {
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return c
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}
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func (c *Uniform) Convert(color.Color) color.Color {
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return c.C
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}
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func (c *Uniform) Bounds() Rectangle { return Rectangle{Point{-1e9, -1e9}, Point{1e9, 1e9}} }
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func (c *Uniform) At(x, y int) color.Color { return c.C }
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// Opaque scans the entire image and reports whether it is fully opaque.
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func (c *Uniform) Opaque() bool {
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_, _, _, a := c.C.RGBA()
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return a == 0xffff
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}
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func NewUniform(c color.Color) *Uniform {
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return &Uniform{c}
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}
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